---
product_id: 148742881
title: "HAOYISHANG PCF8574 IO Expansion Board 8-bit I/O Expander I2C-Bus Evaluation Development Module EK1241"
brand: "haoyishang"
price: "$22"
currency: NZD
in_stock: false
url: https://www.desertcart.nz/products/148742881-haoyishang-pcf8574-io-expansion-board-8-bit-i-o-expander
store_origin: NZ
region: New Zealand
---

# HAOYISHANG PCF8574 IO Expansion Board 8-bit I/O Expander I2C-Bus Evaluation Development Module EK1241

**Brand:** haoyishang
**Price:** $22
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** HAOYISHANG PCF8574 IO Expansion Board 8-bit I/O Expander I2C-Bus Evaluation Development Module EK1241 by haoyishang
- **How much does it cost?** $22 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/148742881-haoyishang-pcf8574-io-expansion-board-8-bit-i-o-expander)

## Best For

- haoyishang enthusiasts

## Why This Product

- Trusted haoyishang brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Description:Standard interface that can be expanded in a variety of development boardsI2C Serial port to 8-bit parallel port , support expand into 8×8 = 64 at mostPCF8574 IO expansion chip with I2C interface, 8-bit parallel port outputApplicable to a variety of platforms including Arduino / AVR / ARMWith this module, you can use only 2 ports of your Arduino or Raspberry Pi board to control up to 8 digital I/O ports.Material: PlasticSize: Approx. 55x15x1mmPackage Includes:1x PCF8574 Expansion Board

## Features

- The PCF8574 IO Expansion Board is used as remote 8-bit I/O expander for I2C-bus. Up to 8 PCF8574 IO Expansion Board can be connected to the I2C-bus, providing up to 64 I/O ports.
- For the shortage I/O resources' MCU to I/O extension
- Supports two types of access to the target board Interface: Pin or row seat
- PCF8574, I2C interface, 8-bit parallel port
- ›See more product details

## Images

![HAOYISHANG PCF8574 IO Expansion Board 8-bit I/O Expander I2C-Bus Evaluation Development Module EK1241 - Image 1](https://images-na.ssl-images-amazon.com/images/I/51NC25waScL.jpg)
![HAOYISHANG PCF8574 IO Expansion Board 8-bit I/O Expander I2C-Bus Evaluation Development Module EK1241 - Image 2](https://images-na.ssl-images-amazon.com/images/I/51s5BDV0jJL.jpg)
![HAOYISHANG PCF8574 IO Expansion Board 8-bit I/O Expander I2C-Bus Evaluation Development Module EK1241 - Image 3](https://images-na.ssl-images-amazon.com/images/I/51C4H9Fj6OL.jpg)

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**Shop now:** [https://www.desertcart.nz/products/148742881-haoyishang-pcf8574-io-expansion-board-8-bit-i-o-expander](https://www.desertcart.nz/products/148742881-haoyishang-pcf8574-io-expansion-board-8-bit-i-o-expander)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-22*